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2025 Compare Cities People:
San Marcos, CA vs Half Moon Bay, CA

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Highlights
- Half Moon Bay is 0% more densely populated than San Marcos.
- People are 2.6% more likely to be married in Half Moon Bay.
- The Median Age is 9.3 years older in Half Moon Bay.
 San Marcos, CAHalf Moon Bay, CAUnited States
 Population  Unlock11,792329,725,481
 Female Population50.1%  Unlock50.5%
 Male Population49.9%  Unlock49.5%
 Median Age  Unlock44.938.4
 space3
 Population - 201083,948  Unlock309,327,143
 Population - 2000  Unlock11,842285,036,114
 Population - 199038,974  Unlock251,960,433
 Pop. 2000 to Now  Unlock5.7%15.6%
 Pop. 1990 to Now150.1%  Unlock30.8%
 space4
 Population Density  Unlock1,834.893.4
 Land Area24.4  Unlock3,531,905.4
 Water Area  Unlock0.0264,836.8
 space
 Est. Total Population By Age
 San Marcos, CAHalf Moon Bay, CAUnited States
 Age 0 to 46.9%  Unlock5.9%
 Age 5 to 9  Unlock5.0%6.1%
 Age 10 to 148.0%  Unlock6.6%
 Age 15 to 17  Unlock3.0%3.9%
 Age 18 to 205.2%  Unlock4.0%
 Age 21 to 24  Unlock5.4%5.2%
 Age 25 to 3412.9%  Unlock13.8%
 Age 35 to 44  Unlock10.3%12.9%
 Age 45 to 5412.4%  Unlock12.6%
 Age 55 to 59  Unlock8.2%6.7%
 Age 60 to 644.6%  Unlock6.3%
 Age 65 to 74  Unlock12.6%9.6%
 Age 75 to 843.3%  Unlock4.5%
 Age 85 and over  Unlock2.2%1.9%
 space1
 Race
 San Marcos, CAHalf Moon Bay, CAUnited States
 White43.5%  Unlock59.4%
 Black  Unlock0.1%12.2%
 Asian10.5%  Unlock5.6%
 Native American  Unlock0.0%0.6%
 Hawaiian, Pacific Islander0.0%  Unlock0.2%
 Other  Unlock0.2%0.4%
 Two or More Races4.2%  Unlock3.2%
 Hispanic  Unlock31.9%18.4%
 space2
 Marriage & Family
 San Marcos, CAHalf Moon Bay, CAUnited States
 Married Population54.1%  Unlock49.8%
     Currently Married  Unlock54.1%48.0%
 Married but Separated1.4%  Unlock1.8%
 Single Population  Unlock44.5%50.2%
 Never Married31.5%  Unlock33.8%
 Divorced  Unlock9.2%10.8%
 Widowed5.2%  Unlock5.6%
 space5
 Household Size  Unlock2.862.60
 Households30,304  Unlock124,010,992
 Family Households  Unlock2,83280,755,759
     Married couple, w/children40.9%  Unlock30.5%
     Married couple, no children  Unlock53.6%42.9%
 Non Family Households7,787  Unlock43,255,233
     Single householder, w/children  Unlock11.8%15.8%
     Single householder, no children9.4%  Unlock10.8%
Voting
Reviews for San Marcos    5 Reviews
Kevin · San Marcos, CA
Best place I have ever lived.
Over 7 years ago

Just an amazing place to live. I have lived in 7 states and almost countless cities. Sam Marcos is one of the best. This is literally the longest place I have lived  More

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Norman · Vail, AZ
retiree location ?
Over 15 years ago

Is this area to expensive for the average income retired  More

   |    Reply
Greg · South Pasadena, CA
San Marcos Weather
Over 18 years ago

Beautiful Mediterranean climate with bright sunshine and ocean breazes. City is just 15 minutes away from the  More

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Reviews for Half Moon Bay    3 Reviews
Steve · Half Moon Bay, CA
Great weather, great restaurants, but too many Dem
Over 17 years ago

HMB has one of the best climates in the world. It also has some very good restaurants. You have the ocean on one side and scenic foothills to the east.It would be heaven  More

   |    Reply
Allison · Half Moon Bay, CA
Half Moon Bay
Over 19 years ago

Rural coastal living in a great community close to San Francisco and Silicon  More

   |    Reply
James · Vancouver, WA
Incredible Area!
Over 20 years ago

I lived in HMB for 17 years and loved (almost) every minute there. Beautiful hills to the east of the town and the Pacific ocean to the west. Close to San Francisco,  More

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Learn More About San Marcos, California
Overview
Cost of Living
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Voting
Learn More About Half Moon Bay, California
Overview
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Voting
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